Lens-cutting machine.



l N0.7'72,783. y 4i?NNNNlND 0012.18, 1904. l I. E. CLARKE.

f LENS CUTTING MACHINE.

NO MODEL.

Patented October 18, 1904.

PATENT OFFICE.

EDWARD CLARKE, OF DUNKIRK.,` NEW YORK.

LENS-CUTTING. MACHINE.

SPECIFICATION forming part of Letters Patent No. 772,783, dated October 18, 1904.

Application filed April 18, 1904.

To tI/Z whom, it 717/607/ concern:

Beit known that I, EDWARD CLARKE, a citizen of the United States, residing at Dunkirk, in the county of Chautauqua and State of New York, have invented certain new and useful Improvements in Lens-Cutting Machines; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improved machine for cutting lenses; and it consists in the construction, combination, and arrangement of devices hereinafter described and claimed.

l The object of my invention is to provide a cheap, simple, and compact machineof this character which is adapted to be operated manually for cutting lenses of any size or shape from the rough glass stock and which will enable Opticians and oculists to cut their own lenses expeditiously and inexpensively.

In the accompanying drawings, Figure 1 is a'perspective view of alens-cutting machine embodying my improvements. Fig. 2 is a detail sectional View taken on the planeintersecting the center of the base. Fig. 3 is a horizontal sectional view taken on the plane indicated by vthe line cr e of Fig. 1. y o

The base 1, which is preferably of the form here shown, but which may be of any suitable form, is provided at one sidewith a standard 2, which has an arm 3 at'its upper end and an arm 4 at a suitable distance from said arm 3. The said arms extend over Athe base, and the arm 3 is provided near its outer end with` a vertical threaded opening, arm 4 being provided with an unthreaded opening, which is in vertical alinement with the threaded opening in the arm 3. The base is provided with a vertical opening 5, which alines vertically with the said openings in the arms. On Athe base is a revoluble disk 6, which is covered on its upper side with rubber orVr other suitable elastic material, as at 7, and is provided on its under side with a centralpivot-stud 8,

which engages the opening 5 in the base, and

hence mounts the said disk on the base for revolution thereon. The said disk is provided with peripheral arms 9, which project radially Serial No. 203,778. (No model.)

therefrom and enable the disk to be readily rotated by the fingers of the operator.

A centering and clamping screw 10 operates in the threadedl opening in the' arm 3 and in the unthreaded opening in the arm 4. Its

lower end is pointed, as at 11, and its upper end is provided with amilled head 12, whereby it may 'be' readilyturned.

On one side of the standard 2 are a pair of 20, whereby it may be moved vertically and also turned in any direction to guide the cutting-point. l

In connection with the machine hereinbefore described I employ a pattern-plate Q1, which corresponds in shape with the lens to be cut and, as here shown, is provided on its under side with cork or other yielding friction devices 23, which are adapted to bear on the upper side of the glass stock from which the lens is to be cut, the glass being placed on the rubber-covered disk 6.

The screw 10 is caused to bear on the upper side of the' pattern-plate, at the center thereof, and to clamp the pattern-plate and the stock lon the disk and center the same thereon. The disk is then rotated by the operator, and with one hand he manipulates the swinging frame 14 and the cutter-rod 18, so as to cause the cutter-point to bear against one side of the rotating pattern-plate and tobe pressed upon the glass stock to the requisite extent to cause the cutter-point to cut 'into the stock and fashion the outline of the lens,

From the foregoing description, taken in connection with the accompanying drawings, the construction andoperation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to Without departing from the principle or sacriiicing any of the advantages of this invention.

Having thus fully described my invention, What I claim as new, and desire to secure by Letters Patent, is-

A lens-cutting machine comprising a base formed integrally with a standard and arms projecting laterally from the standard over the base, said arms being one above the other, the upper arm having a vertical threaded opening, a clamping and centering screw mounted in said bearing-opening and engaging sald threaded opening', a disk having a depending spindle engaging an opening in the base, said disk being thereby mounted for revolution under the clamping and centeringscrew,and being further provided with peripheral radial studs whereby it may be maninally turned, a laterally-swinging frame pivotally connected to the standard and adapted to be swung toward and from the centering and clamping screw and over one side of the base, and a glass-cutting tool comprising a rod pivotally and longitudinally mounted in the said frame, having a cutting-point at its lower end and provided at its upper end with a handpiece, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing` witnesses.

EDIVARD CLARK E.

Iitn esses:

T. I). HEFFERNAN, ISABEL M. CLIFFORD. 

